In communication,a smile is usually ________ strong sign of a friendly and ________ open attitude.                                                        (2011·重庆,26)
#7767
A
the;/
B
a;an
C
a;/
D
the;an
推荐题目
It is ___ to be late.
#10337
A
too good a chance
B
too a good chance
C
too good chance
D
too good chances
I looked under _____ bed and found _____ book I lost last week. 
#8663
A
the; a
B
the: the
C
不填;the
D
the; 不填